Improved mold for forming- blown glassware



lmolding surfaces do not join.

HIRAM DILLAWAY, OF-SANDWICH, MASSACHUSETTS.

Letters Patent No. 100,127, dated February 22, 1870.

The Schedule referred to in these.Letters Patent and making part of the same.

To all whom it may concern.- 1

Be it known that I, HIRAM DILLAwAY, of Sandwich, in the county of Barnstable, and State of Massachusetts, have invented an` Improved Mold -for Forming Blown-Glass Bottles vand other Glassware; and I dohereby declar'that the following, taken in connect-ionwith the drawings which accompany and form part of this specification, is a description of my invent-ion, suicient to enable those skilled in the art to practice it.

Ihis invention relates particularly to the construction of glass molds,'in which the moldingr surfaces are formed of graphite, gas carbon, or"coi;r'o sion of gas retoits, as shown in the United States Patent No. 91,946, thdugh the invention is also applicable,to greaterl or lesser extent, to common metal and wood, and to stone-glass molds.

' Ordinarily, glass moIzls, for forming round bottles and ,other blown ware, circular in section, are made with hinged jaws or members, the interior surf'aces of which, when the mold is shut, forma matrix, fitting to the whole circular surface of the bott-le or other article in process of formation.

In niy-invention, instead Vof making the mold of' two or more jaws, which, when closed together, form a matrix, I construct the mold of several pieces, leaving between cach two adjacent molding faces an vopen space` These separate pieces I prefer to make of' gas-retort carbon or corrosiom 'and I fasten each directly to the inner surface of one or the other ofthe op'cn-and-shut jaws, or to suitable stocks fastenec to t-he jaws.

My invention consists, pmarily, in a glass mold for forming blown-round bottles and siniilar ware, having its molding surfaces composed of separate pieces, placed at intervals lin the jaws, or so that their 'lhe invent-ion also consists in making a mold of pieces of gascarbon or gas-retort graphite, each of which pieces is separate from the others, all being united to the jaws to form the mold.

The invention further consist-s in making a mold with pieces, each of' which is removably attached to the jaws, so that the same jaws may be used for reception of dies for the ibrmation of'an indefinite nnm" her of molds, insteadof iequiring a separate numberof molds for each, and' also so that small pieces of graphite or other material, otherwise useless, may be used in making up the mold.

The drawings represent a lmold embodying my improven'ients.

A shows-a plan of the mold.

B, a section on the line x a.

C, a horizontal section on the line y y.

c a denote two jaws, hinged at one end, as seen at l), and having handles c at their other end, for opening and shutting the mold. v

Within or to the inner surfaces of the jaws c are fixed the blocks or pieces d, the inner surfaces of all of which, in radial planes through the most inwardly parts thereof, are concentric at all parts in the salne horizontal plane with the axial lille of the mold when the jaws are closed. v t

The blocks do not abut when the mold is closed,- bntaije made narrow at their molding faces, and these faces maybe curved or circular in cross-section, to correspond with the circular. form, iii-corresponding section, of the bottle or other articles formed or shaped in the mold, or they may be straghtjin cross-sectional planes, as seen at A, or may even be made angular at their molding lines, edges, or surfaces.

For the number of pieces thus arranged I prefer four, but two or any other greater number may be used.

be brought to the requisite'circular form at all points, though the glass is not` wholly surrounded by the molding surfaces.

The molding pieces mayv be made of metal or wood, as in common molds, or of steatite or other stone, but I liirefer to make them of the material previously mentioned, namely, gas-retort carbon, or gas .corrosion, cutting each piece of this'material to the proper shape, as shown inthe drawings, and fixing i it directly to the inner surface of the jaw, vbyscrews e, as shown at D, or making it dovetailing in crosssection, and securing it in a dovetailing lnortise or recess, in a stock, f, as shown'at A, B, and O.

By making the mold with open spaces, I am en- It will readily be seen that when the bottle is blown in the moldr and is rotated, its surface wili` abled to make use of thin or narrow pieces ofv material, like graphite, large and perfect pieces of which cannot easily be obtained; and whatever material be used, there is inuchless molding surface to be turned or pIaned-down than when the mold is made with a continuous surface.

I cla-iin a mold, for forming or shaping bottles and other blown glassware, circular in section, having its'` :molding surface formed on the inner faces or'edges of pieces or blocks, with open spaces between them,',

substantially as described.

Also, forming each jaw of a mold of a series of pieces 'of gas-retort carbon, or gas corrosion', having spaces between them, each of' which pieces forms one:

of the faces of the mold, substantially as shown and described.' y

Also, in combination with the jaws a a, the molding-blocks or pieces, removably attached-thereto, sub'- stantially as described.

Also, in combination with the jaws and moldblocks or pieces,tlie stocks f, for receiving the block s, substantially asshown and described.

HIRAM DILLANVAY.

Titnessesz JOSEPH L. Roenes, LUTHER BRAKE. 

